@rkrisi starting from v7.1rc5 bridge vlan filtering is done using the switch chip in MT7621 devices, from the 7.1rc5 changelog:
*) bridge - added HW offload support for vlan-filtering on MT7621 switch chip (hEX, hEX S, RBM33G, RBM11G, LtAP);
Prior to that release (including RouterOS 6) bridge vlan filtering was done by the CPU.
So the same config might not work anymore.
I have not messed with VLANs on these devices yet, but the notes from above, plus some extra info from when support for RTL8367 was added:
http://forum.mikrotik.com/t/v7-1rc1-development-is-released/151250/1
http://forum.mikrotik.com/t/v7-1rc1-development-is-released/151250/1
& these guides:
https://help.mikrotik.com/docs/display/ROS/Bridge#Bridge-VLANExample-TrunkandAccessPorts
https://help.mikrotik.com/docs/display/ROS/Bridge#Bridge-Managementaccessconfiguration
Should help you figure it out.